Bose‐Einstein condensation of dipolar excitons in double and single quantum wells

Тимофеев, В. Б.; Gorbunov, A. V.

doi:10.1002/pssc.200777602

Cited by 33 publications

(41 citation statements)

References 25 publications

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“…[14][15][16][17][18][19][20][21] The excitons in these systems are referred to as spatially-indirect or dipolar, since they have a dipole moment in the lowest state. In this article we are concerned with excitons in quasitwo dimensional semiconducting systems, mainly in GaAs/ AlGaAs heterostructures with spatial separation of the electron and hole layers.…”

Section: Introductionmentioning

confidence: 99%

Bose-Einstein condensation of dipolar excitons in lateral traps

Тимофеев

Gorbunov

Demin

2011

Low Temperature Physics

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The phase diagram of Bose-Einstein condensates of dipolar excitons accumulated in lateral electrostatic traps is determined. Spatially periodic luminescence structures of the exciton Bose condensate and their critical dependence on pump level and temperature are observed. Coherence in the dipolar exciton Bose-Einstein condensates is studied by direct measurement of the 1-st and 2-nd order correlators with variations in pump level and temperature. These results are indicative of large-scale coherence of the exciton Bose condensate.

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Section: Introductionmentioning

confidence: 99%

Bose-Einstein condensation of dipolar excitons in lateral traps

Тимофеев

Gorbunov

Demin

2011

Low Temperature Physics

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“…of double quantum wells, provide a model example of dipolar quantum particles12345678. To explore the exotic collective quantum phenomena predicted for indirect excitons91011 studies have emphasized the creation of trapping potentials12131415161718 and gate defined electrostatic traps have led so far to the most advanced realizations61920212223. This technology relies on the dipolar interaction between the well oriented electric dipole of indirect excitons and a spatially varying electric field controlled by the gate electrodes.…”

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confidence: 99%

Optically programmable excitonic traps

Alloing

Lemaı̂tre

Galopin

et al. 2013

Sci Rep

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With atomic systems, optically programmed trapping potentials have led to remarkable progress in quantum optics and quantum information science. Programmable trapping potentials could have a similar impact on studies of semiconductor quasi-particles, particularly excitons. However, engineering such potentials inside a semiconductor heterostructure remains an outstanding challenge and optical techniques have not yet achieved a high degree of control. Here, we synthesize optically programmable trapping potentials for indirect excitons of bilayer heterostructures. Our approach relies on the injection and spatial patterning of charges trapped in a field-effect device. We thereby imprint in-situ and on-demand electrostatic traps into which we optically inject cold and dense ensembles of excitons. This technique creates new opportunities to improve state-of-the-art technologies for the study of collective quantum behavior of excitons and also for the functionalisation of emerging exciton-based opto-electronic circuits.

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“…Beside the gas of polar molecules long range dipolar interaction also arises in a gas of 2D dipolar excitons in 2D quantum well of semiconductor heterostructures. Dipolar exciton gas quantum dynamics [3][4][5] and Bose-Enstein Condensate [6] have been also intensively investigated in recent years. Investigation of the dipolar diatomic molecules are also actual due to the prospects of their possible applications as cubits for the quantum computing [7].…”

Section: Introductionmentioning

confidence: 99%

Short-Range Interaction Impact on Two-Dimensional Dipolar Scattering

Koval

2018

EPJ Web Conf.

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Abstract. We report numerical investigation of the short range interaction influence on the two-dimensional quantum scattering of two dipoles. The model simulates two ultracold polar molecules collisions in two spatial dimensions. The used algorithm allows us to quantitatively analyse the scattering of two polarized dipoles with account for strongly anisotropic nature of dipolar interaction. The strong dependence of the scattering total cross section on the short range interaction radius was discovered for threshold collision energies. We also discuss differences of calculated scattering cross section dependencies for different polarisation axis tilt angles.

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Bose‐Einstein condensation of dipolar excitons in double and single quantum wells

Cited by 33 publications

References 25 publications

Bose-Einstein condensation of dipolar excitons in lateral traps

Bose-Einstein condensation of dipolar excitons in lateral traps

Optically programmable excitonic traps

Short-Range Interaction Impact on Two-Dimensional Dipolar Scattering

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